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| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2009-09-21 17:01:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-22 07:17:30 -0700 |
| commit | a26f5320c4ee3d46a0da48fa0f3ac6a00b575793 (patch) | |
| tree | 76e4502dae5d278c9a3cebbeda53f01aa1cf3e67 | |
| parent | 74a1c48fb4e9f10e3c83dcd39af73487968e35bf (diff) | |
| download | blackbird-op-linux-a26f5320c4ee3d46a0da48fa0f3ac6a00b575793.tar.gz blackbird-op-linux-a26f5320c4ee3d46a0da48fa0f3ac6a00b575793.zip | |
vmscan: kill unnecessary prefetch
The pages in the list passed move_active_pages_to_lru() are already
touched by shrink_active_list(). IOW the prefetch in
move_active_pages_to_lru() don't populate any cache. it's pointless.
This patch remove it.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/vmscan.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 20c5fa8eca46..e219b47fc50b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1273,7 +1273,6 @@ static void move_active_pages_to_lru(struct zone *zone, while (!list_empty(list)) { page = lru_to_page(list); - prefetchw_prev_lru_page(page, list, flags); VM_BUG_ON(PageLRU(page)); SetPageLRU(page); |
